Sandpapering-machine.



W. s. KBLLEY.

SANDPAPERING MACHINE.

APPLICATION FILED SEPT. 6, 1910. A

Patented Dec. 26, 1911.

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W/TNESSES:

`3Q is vertically adjustable thereon.

UMTED STATES.;

fwitpieni s. KEILLEE', 0E MoUNTHHoLLY,

l 'MLecHINE COMPANY, 0E sMIfrHvILLE, NEW JERSEY, e. CORPORATION or NEW PATENT OFFICE.

NEW JERSEY, ASSIGNOR TO H. 3., SMITH sANDrAPERING-MACH'INE.

specification o'f Letters Patent. 'Patented Dec. 26, 1911. Application ledseptember 6, 1919. Seri'al'No. 580,615.

A .a'citizen of'the United States, residing ati Figure,1,isalongitudinalsection, and- F ig. 2 a siiieelevation, of the machine.l Fig. 3 is a detailview ofone of the sectional rolls. F igs.-4"an'd5' are detail views of one'of the sectionalp'resser bars.

2,5 10T is the'main fram chine. 'l

11 isa frame carrying...- hesanding drums 12, the lower,feedrolleis`13fand platens 14. The framev 11 is mounted on the bed 10 and The ladjustable 'supporting means comprises four devices;located'near the respective -oorners of thmachine. Each device consists of an invertediboxl5 secured tofranie 11 an upggrightthreadod shaft 16 having bearings in `.the boxand in the bed, a collar 17 secured to 'shaft 16, a coil spring 18 surrounding shaft 16 and Aconfined between the collar 17 and *box 15,-a'nd a hand-'wheel t19 on thelowcr 40' end ofthe shaft. By turning either shaft 1 6 in one direction, the corresponding collar 17 will be raised, thereby, through the corre- "sponding spring 18, raising the corresponding corner of the frame 11. 'By turning the shaft-in -the other direction, the collar 17 will 'be lowered, thereby permitting the correspondin'gcorner of frame 11 to drop to the extent permitted bythe spring 18.' Thus, all four corners of the frame -11- may be independently raised or lowered. A

The lower feed rollers 13 are arranged" alternately to-the drums 12 and are Vdriven by the following mechanism; 2O 'isthe main drivin shaft rotating` in bearings in the main igt bed of .the ma-- ame.. This A,shaftcarries a gear '21,.

which, through an intermediate gear 22,

drivesa gear'26'on a shaft 27 rotating in bearings on themain frame. The gear 26 .engagesagear 28 on the shaft of the adjacent lower -feed roller 13. Each'of the other lower feed roller shafts carries a similar` gear 28, which is driven from a transmission gear 29, -rotating in bearings in the. frame 11, and in turn driven by the preceding gear 28 -of the series. Any convenient known means may be provided for driving the drnlns, and such means are not herein shown as they have no relation to or bearing upon theL invention herein disclosed. Projecting upward from the bed lOare standards 31,

` one at each corner of the bed. The frame 30, which carries the .upper feed rollers and idler rollers, isprovided, at' the four corners thereof, with projections 32 extending longitudinally and outwardly and fitting vslidably vwithin lvertical guides 'in the four standards 31 respectively. Projecting laterally from each projection 32 is a nut 33, the

corresponding standard being out away in a' vvertical direction to permit the nut to travel vertically and to accommodate the corresponding vertical screw shaft 34, which engages the nut 33 and turns in bearings 35 and 36 at the upper and lower ends respectively of the corresponding standard 3l. On .the upper end of each screw shaft 34 is a bevelgear 37. Each bevel gear 37 meshed with a bevel gear 39.- Two of the bevel gears 37 at one end of the machine mesh with bevel gears 38. The two pairs of bevel gears 39 at opposite sides of the machine are on longitudinal shafts 41 respectively.

bevel gears 38 are on a transverse shaft. On oneof the shafts 41 is a hand-wheel- 42. It will b e understood thatby turning the hand- The two wheel 42, the corresponding shaft 41 will transmit equal movements of rotation to the four upright screw shafts 34, which, having no vertical movement, will lift the four nuts 33 and the frame 30 carried thereby. The frame 30 may a rightline, thereby enabling the machine thus be 'raisedor lowered in to be adjusted to vary .the maximum andv minimum thicknesses of work to b'e operated upon by the drums. Turning in bearings on the frame 30 are seven rollers disposed respectively aboveand. opposite. to the four lower feedv rollers 13 and three sanding' drums 12. The. four rollers 50 above the lowerqfeed rollers 13 are driven 'rollers and coperate with the f eed rollers 13 to feed the material along the work bed. The three rollers 51 above the sandingdrums 12 are idler rollers.. For the rollers 51 may be-substituted .presser bars, one of which, indicated by the reference numeral 70, is shown in Figs-4 and5.

The feed rollers 50 main driving shaft by the following means: The shaft '27, heretofore, described as being driven from the driving sha'ft, 'carries near the end a 'gear 54E, which, through the medium of an intermediate gear 57, drives a gear 58 fixed on the shaft of the adjacent upper feed roller 50. Each upper feed roller shaft has secured thereto similar gear 58, and each two adjacent gears 58 are operatively connected by an intermediate gear 59 loose on the shaft ofthe corresponding in-v termediateidler roller 51. By driving the seriesof gears 58, 59, all the upper feed rollers are positively rotated, while the idler.

' rollers are not rotated except by means of Y 'tion of thickness will depend upon the de? the work itself pressed against the idler rollers by the sandingdruins. The shaft of the gear 5,7 is hung upon a pairof links 61 p ivoted on the shaft 27 and also upon a pair of links 62 pivoted on the shaft of the adjacent feed roller G0. Thereby provision is made for maintaining the driving connections to the upper feed rollers notwithstand- 'ing the described vertical adjustment of the frame 30. Each of tlierollers 50'and 51 comprises a series of independent annular sections 65 disposed side by sideA along the shaft of the roller and adapted to be normally held under s'pringpress'ure in concentric position relatively to the shaft while capableof yielding so as to assume an eccentric position in response to the upward pressure of work passing under them. See Fig. 3. The specilic construction of one of these sectional rollers need not be described, as the same forms no part of my invention. A roller of this character is disclosed,` for example, in the W'hitney Patent No. 459325 of September 8, 1891. If presser bars are employed, they too would be made sectional, as shown in Figs. 4: and 5. In the application of sectional rollers of this character, in

-the manner described, to a roller-feed drum sander, means are provided whereby the sanding drums can act simultz` .eously upon work of differentthicknes.c .-s that pass., either side by side'or succe' sively, through the machine. 'Ihe possibi( range of variagree towhicli the sections 65 are rendered are driven `from the,

capable of yielding radially.` Inoperation, the frame 30 is first'adjusted so as to provide for the material of minimum thickness,

and then work of varying thickness maybe i It will be understood'that'tlie rollers 5.0 may be idler rollers,v or alternatively', the

rollers 13 maybe idler rollers; but the operation of the machine will be more satisfactory and certain if both these setsof rollers are positively driven.

` Having now fully described my invention,

what I lclaim and desire to protectby Letters Patent is f 1. In a sand papering machine, the com-A bination with ay lower frame and anupper frame, of a series of hsanding drums and a series of solid rollers carried by one frame, said drums and rollers being arranged alternately, and yielding devices carried'by the other frame and arranged opposite said drums and rollers 'and adapted, under `pressure of said drum and rollers`,"t0 yield along different longitu inal lines to permit the' drums to successively operate upon work of different thicknesses without reducing the y wort to a uniform thickness.

2. In a sand papering macliimthe combination, with a lower frameanda'n upper frame, of a sanding drum carried by one frame, a yielding device carried by the 'other frame 'and arranged opposite the sanding` drum and adapted to yield along diiferent longitudinal lines to permit the drum to 0p-v erate upon work of diferent thickness, feeding means arranged in advance ofthe sanding drum and including a similar yieldin device, and delivery means arranged beyon the sanding drum and including a similaryielding device, whereby work of different thicknesses may be siniultaneousl;`r fed, p'olished and' delivered without reducing the same to a uniform thickness.

Intestimony of which invention. I have hereunto set my hand, at-Mount- I-Iolly, New

Jersey, on this first day ofSeptember, 1910. WVILLIAM S. KELLEY.

Witnesses: x

ELTON ALLEN SMITH, J r., GEO. A; Lirrixcorr. z 

